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CVE-2021-1376
CVE ID
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CVE-2021-1376
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
Multiple vulnerabilities in the fast reload feature of Cisco IOS XE Software running on Cisco Catalyst 3850, Cisco Catalyst 9300, and Cisco Catalyst 9300L Series Switches could allow an authenticated, local attacker to either execute arbitrary code on the underlying operating system, install and boot a malicious software image, or execute unsigned binaries on an affected device. These vulnerabilities are due to improper checks performed by system boot routines. To exploit these vulnerabilities, the attacker would need privileged access to the CLI of the device. A successful exploit could allow the attacker to either execute arbitrary code on the underlying operating system or execute unsigned code and bypass the image verification check part of the secure boot process. For more information about these vulnerabilities, see the Details section of this advisory.
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CVSS V3 Severity and Metrics
General Information
Vendors
Products
- ios xe 16.10.1,
- ios xe 16.10.1e,
- ios xe 16.10.1s,
- ios xe 16.11.1,
- ios xe 16.11.1b,
- ios xe 16.11.1c,
- ios xe 16.11.1s,
- ios xe 16.11.2,
- ios xe 16.12.1,
- ios xe 16.12.1c,
- ios xe 16.12.1s,
- ios xe 16.12.2,
- ios xe 16.12.2s,
- ios xe 16.12.2t,
- ios xe 16.12.3,
- ios xe 16.12.3a,
- ios xe 16.12.3s,
- ios xe 16.12.4,
- ios xe 16.12.4a,
- ios xe 16.5.1,
- ios xe 16.5.1a,
- ios xe 16.6.1,
- ios xe 16.6.2,
- ios xe 16.6.3,
- ios xe 16.6.4,
- ios xe 16.6.4a,
- ios xe 16.6.4s,
- ios xe 16.6.5,
- ios xe 16.6.6,
- ios xe 16.6.7,
- ios xe 16.6.8,
- ios xe 16.8.1,
- ios xe 16.8.1a,
- ios xe 16.8.1s,
- ios xe 16.9.1,
- ios xe 16.9.1s,
- ios xe 16.9.2,
- ios xe 16.9.2s,
- ios xe 16.9.3,
- ios xe 16.9.3a,
- ios xe 16.9.3s,
- ios xe 16.9.4,
- ios xe 16.9.5,
- ios xe 16.9.6,
- ios xe 17.1.1,
- ios xe 17.1.1s,
- ios xe 17.1.1t,
- ios xe 17.1.2,
- ios xe 17.2.1,
- ios xe 17.2.1a
References
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Zero-day Exploit
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below:
